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37y^{2}-6x
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37y^{2}-6x
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36x+16y^{2}-42x+21y^{2}
To find the opposite of 42x-21y^{2}, find the opposite of each term.
-6x+16y^{2}+21y^{2}
Combine 36x and -42x to get -6x.
-6x+37y^{2}
Combine 16y^{2} and 21y^{2} to get 37y^{2}.
36x+16y^{2}-42x+21y^{2}
To find the opposite of 42x-21y^{2}, find the opposite of each term.
-6x+16y^{2}+21y^{2}
Combine 36x and -42x to get -6x.
-6x+37y^{2}
Combine 16y^{2} and 21y^{2} to get 37y^{2}.
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